Window-latch.



D. P. MAMMELLI.

WlNDOW LATCH. APPLlcAnoN FILED JAN. 11, |916.

Patented May 30,1916.

lli

DOMINICK P. MAMMLLI, OF NEW ORLEANS, LOUISIANA.

WINDOW-LATCH.

specification of Letter Patent.

To all whom t may concer/n.'

Be it known that 1,-DoM1nioK P. Maisi- MnnLr, a citizen of the UnitedStates, residing at New Orleans, in the parish o Orleans and State ofLouisiana, have invented new and useful Improvements in Window- Latches,of which thefollowing is a specication.y

This invention relates to window latches, and itV has specific referenceto a latch f or securely locking the lower sash of a wmdow in positionwith respect to the window frame.

he invention has for its object to *p roduce a simple and eiective latchof 1mproved construction whereby the bottoni sash. when lowered to itsclosed position will be effectively secured until released by meansprovided for the purpose. .20

A further object of the invention is to produce a device of the classdescribed i n which the latch may be releasedto permit a window to beopened by means of a push button, avoiding the use of keys or the like.

With these and other ends in view which will readily appear as thenature of the invention is better understood, the same consists -in theimproved construction and novelv arrangement and combination of partswhich will be hereinafter fully described and particularly pointed outin the claims.

In the accompanying drawing hasbeen illustrated a simple and preferredform of the invention, it being, however, understood that no limitationthe precise structural details therein exhibited, but that changes,alterations and modifloat-ions within the scope of the claims may beresorted to when desired..

ln the drawing, Figure l is a perspective view showing the sill and thelower portion of a window frame, together with a portion of the bottonisash, the same having the invention applied thereto. Fig. 2 is avertical sectional view taken substantially on the line 2-2 in Fig. 1,Fig. 3 is a vertical sectional view similar to Fig,l 2, but enlarged,and showing the bottom sash in locked position. Fig. -Clis a perspectivedetail view of the latch casing. Fig. 5 is a `perspective detail view ofa pivoted latch member. Fig, 6 is a perspective detail view showing thelatch engaging catch member which is to be mounted on the bot-tom railof the bottom sash.

is necessarily made to j threaded, as shown.

Patented May 30, 1916.

Application led January 17, 1916. Serial No. 72,523.

Corresponding parts in the several iigures are denoted by likecharacters of reference. The sill l5 of the window to which the deviceis to be applied is provided with a mortise or recess in which thecasing or housing 16 of the improved device is mounted, said casinghaving at its upper edge a flange 17 which is apertured for the passageof fastening members, such as ordinary wood screws 18, the heads ofwhich are preferably countersunk in the Hangs.

The housing includes wall members which for'convenience will bedesignated as the front and rear wall members 19, 20. The rear wallmember 20 is provided on the inner face thereof near the upper edge. ofthe housing with bearing sleeves 2l for the reception of a. pin or pivotmember 22 on which is hingedly supported a latch member consisting of aplate 23 havingr at the upper end thereof a bearing sleeve 2i and abeveled head portion 25 having a shoulder 26. A spring 27 interposedbetween the plate 23 and the rear wall of the housing serves to forcethe lower end of the latch member in a. forward direction toward thefront wall of the housing. The said front wall is provided near thelower edge thereof with an aperture 27 for the reception of a nipple 28projecting at one end of a cylindrical socket 29 which by moans of thesaid nipple is connected with the front wall of the housing, as clearlyseen in Figs. 2 and 3, the nipple` being preferably extcr? nallythreaded to enable it to be conven iently assembled with the housing.the aperture 27 of -which is correspondingly threaded.

Extending through the nipple 28 and the socket member 29 is a rod 30having at one end a head 3l which is positioned within the housing 1G insuch fashion as to abut on the lower end portion of the latch plate 23.Coiled about the rod 30 within the housing 29 is a spring 82 which istcnsioned by means of a disk or washer 8B which is in threadedengagement with the rod BO, the outer or forward end of which is screwThe tension of the spring 32 is exerted against the washer 33 to' forcethe rod in a forward or outward direction throu f h a horizontalaperture 3i in the sill l5. A push button is placed in 'threadedengagement with that portion u of the rod which extends beyond the innerface of the sill, and 6 is mounted on the push button.

Secured on the under face of the bottom rail 37 of the bottom sash 38 isa catch member consisting of a plate 39 having a flange 40 provided withapertures 41 for the pas# sage of fastening members, such as ordinaryscrews. At its lower end the plate 39 has a catch hook 42 adapted toengage with the beveled head 25 of the latch member 23 to secure thebottom lsash in locked position, the parts being protperly proportionedso that when the bottom sash is forcibly moved down to engage the sill,the catch member 39 will enter the housing 16, causing the catch hook 42to engage beneath the shoulder 26 of the beveled head 25 of the springprojected latch member. In order that the catch member 39 may readilyengage and enter into the' housing 16 the said catch member isdownwardly beveled, as shown.

an escutcheon plate sill surrounding the of alinement with the housing,it will still enter the same and be guided safely within housing withoutdanger of injury or breakage oi any of the parts.

In order to release the latch so as to permit the bottom sash to beopened it is only necessary to manipulate the push button 35, wherebythe rod 30 will be pushed in a rearward or inward directiol, causing thehead 31 to engage the springr projected latch plate 23, forcing thelatter agalnst the tension of e spring 27 in the direction of the rearwall of the housing and disengaging the shoulder 26 from the hook 42. f

It will be seen that I have produced a very simple and effective windowlatch which by reason of its construction as herein set forth may beeasily and inexpensively installed on any window casing of ordinaryconstruction. i 1

Having thus described the invention, what is claimed as new, is z` 1. Ina latch of the character described, a housing open at its upper end andprovided with an attaching flange at its upper edge, the rear wall ofsaid housing havmg bearing sleeves on its inner face the upper edge fthereof, a latch member consisting of a plate havl g at its upper end abeveled head and at its upper edge a bearing sleeve, a pin engaging thebearing sleeves on the rear and at the upper edge of the latch p plate,and a spring interposed between the lower portion of the latch plate andthe rear wall of the housing.

2. In a latch of the character described, a ousing open at its upper endand provided with an attaching flange at its upper edge, the rear Wallot said housing having bearhousing, the forward wall of the housingbeing provided with an e ge; socket member having a. nipple engaging theaperture, a headed bolt extendingthrough thereof, plate having at itsupper end a beveled head and at its upper edge a bearing sleeve, a pinengaging the bearing sleeves DOMINICK P. MAMMELLI.

Witnesses WM. F. CoNxnn'roN,

' GEO. W. MOORE.

on the rear am affix my signature

